I could not find featured tab. But I managed to stumble there anyway.
Between title and published date is the company publishing, then a right pointing arrow. Click that. New page opens with all their products. At bottom are two buttons. Rt button is your login email addy. Left is "redeem" button. Click that, window pops up, enter code, ONCE. Download starts. Don't enter more codes here despite prompt. They're just wasted.
Start over with new selected product to enter another code. Codes seem to not be limited to the first person.
Sent from my iPad using iPF, still lots room left in 64GB